A great educational tool for teaching time to children, particularly sensory avoiders. The plain black and white colours help to reduce the amount of distractions colours would present.
Also the ability to move the hand timers themselves rather than simply looking at a picture on a page makes it more interactive for tactile learners. It’s also helpful for parents of beginners to, for example, set this clock to a certain time and tell them “we are allowed to be out of bed when the other clock looks like this”.
It will encourage the child to be more indecent and feel more in control of their day. Especially helpful for people who need clear structure.
This visual shows 24hr time too. 15cm.